Factfulness: Ten Reasons We're Wrong About the World – and Why Things Are Better Than You Think is a 2018 book by Hans Rosling. In his book, Rosling suggests the vast majority of human beings are wrong about the state of the world. He shows that his test subjects think the world is poorer, less healthy, and more dangerous than it is.[1][2] Rosling recommends thinking about the world as divided into four levels based on income brackets. He suggests ten instincts that prevent us from seeing real progress in the world.[3][4] These are listed as Gap, Negativity, Straight Line, Fear, Size, Generalization, Destiny, Single, Blame, and Urgency.[5]

Bill Gates highlighted the book as one of his suggested 5 books worth reading for summer 2018.[6] A Business Insider review notes that although Rosling argues that the future will be better than expected because birth rates are stabilizing, life expectancy around the world is increasing, the gender gap is nearly closed, and the extremely impoverished population is shrinking, others point out that populations are still expanding (with many still under-nourished), life expectancy in the US is decreasing, the gender gap is only nearly closed in education and not in employment, and extreme wealth has become more extreme.[4]

Rosling criticizes the notion of dividing the world into the "developed world" and the "developing world", saying it's a outdated view. He shows that today most countries are "developed" and the ones that aren't don't fit how developing countries were when the term became popular.